I'm pretty sure that there are run in instructions for differential changes. I'm not 100% sure but you need to change out the fluid and there's like 1200 miles break in period for Dinan 4.10 limited slip differentials. Let me kno how it goes cause I'm interested in changing my diff too!!

I love the change man! the car just pulls harder and faster now. It is not that much shorter that you would be shifting every other second but its short enough to feel a difference. a dramatic difference. there is a VERY VERY VERY slight whine to the 2 clutch LSD but its not even noticeable unless you really try to pay attention to it. I would recommend that you do this mod man! haha. its awesome. though i haven't pushed the car hard enough yet to see the gains of the new LSD but the gearing is good. If you are interested in the Ba Performance group / Diffs Online one, let me know. I'll try talking to the guys there or I can give you a contact. Anderson is very interested in this too so maybe you guys can do a buy together. Might get a better price. Its a little cheaper than the Dinan one and I'm pretty sure that they are the same parts. haha. So yea! let me know man.